"The interrelation between Homeland Security and National Defense began with the formulation of the National Security Strategy. This essay examines the military's role in homeland security and defense through an evaluation of the Homeland Security Strategy and its relation to the National Security Strategy. It provides an explanation of the interrelation between the two strategies and the military's roles in these strategies. It also describes the critical missions of homeland security and how the military interfaces with those missions. It also presents why the U.S. military must maintain its capability to engage in symmetrical encounters, while transforming its forces into units capable of conducting asymmetrical engagements."
Defense Technical Information Center (DTIC): http://www.dtic.mil/dtic/